944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Post  xschop on Wed Aug 15, 2012 9:49 am

My LM7 crank pilot depth is 16.9mm

If you did not clean the crank seat out very well it could cause it to protrude some. Also if the LS1 flywheel has been resurfaced, it will cause your situation as well. I've always wondered if non-factory flywheels are way off in total depth to cause this problem. Whatever disc you have has to be flat at the rear hub. If it's not, grind it flat.

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And should extend out for more spline engagement...

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Post  Porschedoc on Wed Aug 15, 2012 1:04 pm

This is the disc I was sent:
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crank seat is definitely clean, and definitely 16.16mm deep. LS1 flywheel is NEW, but is not a factory flywheel, which I guess could be an issue. Which disc is that pictured? Maybe I should pick one up and see if it fits better.

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Post  xschop on Wed Aug 15, 2012 1:26 pm

You can clearly see that disc you have needs it's rear hub face ground FLAT.
Do that and move on.

The original one I installed (Pic) is Autozone CP-4018. Last time I checked they were all sold out locally.
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Post  Porschedoc on Wed Aug 15, 2012 1:31 pm

Think we got her figured out. Eric needs to machine down that hub on the flywheeel side and all should be right with the world again.

Oops just saw your post! Solutions abound Smile

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Post  xschop on Wed Aug 15, 2012 1:35 pm

I believe the original Spec discs were the same problem. My clutch builder made a few discs for me and used center hubs from the Dodge trucks (Just like CP-4018) that have no rear protrusion. Those have been long sold and one is in my swap since I blew the PP on a 6500rpm shift LOL.

Also you should be using the 15x35x11 roller bearing since your flywheel total depth may be shorter than factory.
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Post  Porschedoc on Wed Aug 15, 2012 2:42 pm

xschop wrote:I believe the original Spec discs were the same problem. My clutch builder made a few discs for me and used center hubs from the Dodge trucks (Just like CP-4018) that have no rear protrusion. Those have been long sold and one is in my swap since I blew the PP on a 6500rpm shift LOL.

Also you should be using the 15x35x11 roller bearing since your flywheel total depth may be shorter than factory.

Pretty sure that is what I have. The PB sits flush with the adapter when inserted. Thanks guys!


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Post  matty89 on Sat Jul 08, 2017 9:21 am

so for truck specs engines it need to be flush to the flywheel? im starting to think i didnt do enought mesuring on my car i bought a whole setup from kent at tpc for clutch pressure plate and flywheel all stock gear and my engine is a truck 6 L 2003 gen 3 ... i know my pb dept is good but i didnt have to move my TT shaft in its on stock positioning...

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